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From Wikipedia: "For stars with similar metallicity to the Sun, the theoretical minimum mass the star can have, and still undergo fusion at the core, is estimated to be about 75 times the mass of Jupiter. When the metallicity is very low, however, a recent study of the faintest stars found that the minimum star size seems to be about 8.3% of the solar mass, or about 87 times the mass of Jupiter. Smaller bodies are called brown dwarfs, which occupy a poorly defined grey area between stars and gas giants."
Comment 1: Metallicity refers to the percentage of elements heavier than helium (not "metals" in the chemical sense).
Comment 2: Basically, a brown dwarf gets hot enough to fuse deuterium (hydrogen-2), but not regular hydrogen (hydrogen-1), which severely limits the amount of energy it can produce.
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Do medium size stars become black holes?
No. They do not have enough mass to become black holes. Depending on the mass they will either become white dwarfs or neutron stars.
Which scientist proved that the stars with mass less than 1.44 times the mass of the sun end up as white dwarfs?
S. Chandrasekhar
How are low mass star born?
Low mass stars are created in the same way as all other stars, with one exception. They do not accumulate enough mass to create enough pressure in the core for nuclear fusion to occur. They "glow" because of the external pressure on the core but this is not enough to initiate nuclear fusion.
What unit do astronomers use to measure the masses of stars and star like objects in the universe?
The official unit for mass in science (and elsewhere), of course, is the kilogram. In astronomy, for ease of comparison, the masses of stars, and even galaxies, are often expressed in "solar masses", meaning multiples of the mass of our Sun.
How does a black holes acquire greatest mass?
Most black holes are stellar mass black holes with masses comparable to those of large stars as they form from the collapse of massive stars. Scientists know of the existence of supermassive black holes that are millions to billions of times the mass of our sun and can be found in the centers of most galaxies. Scientists still do not know how these black holes become so massive.
What is a mass of stars called?
An isolated and distinct mass of stars is a galaxy.
What did Einstein propose about stars?
its not about stars its about mass and he proposed that mass can be converted into energy
What do high mass stars and low mass stars have in common?
They produce light.
Do high mass stars or low mass stars have a faster rate of burning?
Higher mass stars "burn" faster due to the increased pressure in the core.
How do the numbers of low-mass stars compare with those of higher-mass stars in new star clusters?
In a newly formed star cluster stars with low masses must greaty out number stars with high masses. High mass stars are rare and low mass stars are extremely common.
Is the sun a low mass or high mass star?
There are more low mass stars. this is for two reasons:- # the star forming process generates more low mass stars # High mass stars burn out very quickly and explode as supernovas and thus over time there are less and less of them.
What is made when stars die?
There are three types of stellar remnants. Low to medium mass stars will become white dwarfs. High mass stars will become neutron stars. Very high mass stars will become black holes.
What are both high mass and low mass adult stars classified as?
Main Sequence Stars
What do you call a huge mass of stars and planets?
A huge mass of stars and planets is called a galaxy.
Which stars have convective cores?
High-mass stars
What happens as stars die?
Exactly what happens depends on the mass of the star. Low mass stars first expand into giants, then shrink to white dwarfs. Stars with a little more mass than the Sun end up as neutron stars; stars with considerably more mass with the sun end up as black holes.
Do low mass and medium mass stars eventually become neutron stars?
Low and medium sized stars will end up as white dwarfs.
